RAPOO | M7800P-B 5G Wireless 1600 DPI Laser Mouse with ZOOM in and out Function - Black (Nano Receiver) / 12 months battery life 7800P is a wireless laser mouse, which adopts reliable 5GHz wireless transmission far away from the interference of 2.4GHz wireless, bluetooth and WIFI device. You can instantly choose between 800 DPI for accuracy and 1600 DPI for fast movement by pressing the DPI button. With Zoom-in / Zoom-out button, you can zoom screen on your finger-tips. With the forward/back buttons, you can get easy to review website or profile. 6 Programmable keys save time by using customized buttons, as Forward, Back, Tilt-wheel, Zoom-in, Zoom-out, etc for quick responses. Ultra small nano receiver is so small and unobtrusive that you can plug it into a USB-port and forget about it. No more worries about lost receivers.